Surgical strategy used in multilevel cervical disc replacement and cervical hybrid surgery: Four case reports

Figure 9 The position of the upper tab relative to the lower tab (denoted with dashed lines) of Prestige-LP in flexion (A), neutral position (B), and extension (C). The Prestige-LP cervical disc was designed with a ball and socket structure, with the ball to the rear of the upper tab and the socket on the lower tab. This design allowed the prosthesis to move transversely; the forward displacement was larger, and the prosthesis could move only slightly backward.